Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: toller on 04 April 2007, 21:26:36

Title: idle control valve (knackered?)
Post by: toller on 04 April 2007, 21:26:36

Following on from my earlier post about the engine running like crap after cleaning the ICV, just read on Vaux-ON that the valve should spring closed, is this correct?

If it is then mine is open and doesn't appear to have any sort of spring loading on it, the valve just drops back open about  4 - 5mm.

Title: Re: idle control valve
Post by: Marks DTM Calib on 04 April 2007, 21:29:21

It should spring shut......can I sudgest you give it another good clean......its worth filling it with cleaner in a farly upright position for a period of time.... then shake it well before blasting it out with more cleaner....

Title: Re: idle control valve
Post by: toller on 04 April 2007, 21:31:08

That would seem to explain my problem then :)  Will have another go in the morning.

This place is a godsend.

Title: Re: idle control valve
Post by: toller on 05 April 2007, 08:40:14

Right, got the valve here now and it is springing open,  if i move it so it's fully closed it's springs back open by about 4mm, i'm assuming this isn't correct.

Is this a busted valve?

Title: Re: idle control valve
Post by: JasonH on 05 April 2007, 09:22:33

I'm pretty sure mine springs shut. There's no visible gap down the hole until you get a finger on it and start to spin it round.

Title: Re: idle control valve
Post by: toller on 05 April 2007, 10:00:33

I've cleaned it all out again and it's still doing the same, springing open.  When i start the engine it won't start unless i have the throttle open a bit and it's then very lumpy and misfires, there also seems to be a lot of crap coming out of the exhaust.

Once it's being running a few minutes and warmed up it seems ok although when revved the tickover drops back to below 500 before evening out.

Just phoned a scrappy and they want £25 for an ICV

The only thing i touched on it yesterday was the ICV and it was running fine before that, don't really see how it could be anything else.

Title: Re: idle control valve
Post by: Admin on 05 April 2007, 10:03:18

£25 for an ICV???  ;D ;D ;D

I'll sell you one for £10 posted! :).... it works too! ;)

PM me if interested

Title: Re: idle control valve
Post by: Craig_R on 05 April 2007, 10:13:52

If you have a 2 litre i have a spare

Craig

Title: Re: idle control valve
Post by: toller on 05 April 2007, 10:17:21

It's the 2.5, PM sent to laidback66  :y

Title: Re: idle control valve
Post by: toller on 05 April 2007, 12:31:36

Ok, just turned the engine over with the ICV out of the plenum but still plugged in,  when the engine is turned over the valve closes fully but reopens when the engine is stopped,  i can still only get the engine to start by applying a fair bit of throttle but then it seems to tick over ok.